Check out the NES Mini CRT filter

[megamarc]

Hi RexyDallas,

Thanks for the samples. I was already aware of the horizontal smearing of adjacent pixels and how developers used it to fake transparency and more colors by interleaving strips of alternating colors, specially for the Sega MegaDrive/Genesis. Sonic, Vectorman, Comix Zone... many of them. The first step of the CRT filter in Tilengine is a basic horizontal blur that recreates this behavior.

This image of Comix Zone illustrates the effect too: